Delay Is Likely on Test-Ban Vote
As Senate Leaders Press for Deal

WASHINGTON -- With Senate leaders expected to avert a vote on the ill-fated nuclear test-ban treaty, experts say shelving the pact wouldn't gravely harm U.S. arms-control efforts around the world.

After two weeks of heavily partisan squabbling over the accord, senators from both parties came close to an agreement Tuesday night to postpone a ratification vote, but the effort was at least temporarily blocked by a group of conservative senators who remain intent on pushing the treaty to a vote. Nearly all Republicans have...